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Comparing libev/ev.c (file contents):
Revision 1.382 by sf-exg, Thu Jun 30 13:13:59 2011 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
302#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 348# else
306# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
347 390
348#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 393#endif
351 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 414# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
360# else 420# else
361# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
363# endif 423# endif
364#endif 424#endif
365 425
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 427
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
377#endif 431#endif
378 432
… …
386# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
387#endif 441#endif
388 442
389#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
393# endif 472# endif
394#endif 473#endif
395 474
396#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
397# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
403# endif 482# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 483#endif
409 484
410#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 487# include <stdint.h>
… …
443 uint32_t ssi_signo; 518 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
445}; 520};
446#endif 521#endif
447 522
448/**/ 523/*****************************************************************************/
449 524
450#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 527#else
453# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
459 */ 534 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 537
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
468 555
469/* the following are taken from libecb */ 556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
611 #if __GNUC__
612 typedef signed long long int64_t;
613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
627#else
628 #include <inttypes.h>
629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
630 #define ECB_PTRSIZE 8
631 #else
632 #define ECB_PTRSIZE 4
633 #endif
634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
645 #endif
646#endif
471 647
472/* many compilers define _GNUC_ to some versions but then only implement 648/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 649 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 651 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 652 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place. 653 * an issue with that they should have done it right in the first place.
478 */ 654 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
482 #else 657#else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
484 #endif 777 #endif
485#endif 778#endif
486 779
487#if __cplusplus 780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
488 #define ecb_inline static inline 866 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
491#elif ECB_C99 869#elif ECB_C99
492 #define ecb_inline static inline 870 #define ecb_inline static inline
493#else 871#else
494 #define ecb_inline static 872 #define ecb_inline static
495#endif 873#endif
496 874
497#if ECB_GCC_VERSION(3,1) 875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
498 #define ecb_attribute(attrlist) __attribute__(attrlist) 894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr) 900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else 917#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 918 #define ecb_prefetch(addr,rw,locality)
507#endif 919#endif
508 920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
509#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__)) 948#endif
949
511#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__)) 952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
514 965
515#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 967 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 968 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 969 #define ecb_cold ecb_attribute ((__cold__))
… …
525/* put around conditional expressions if you are very sure that the */ 976/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 977/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 978/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */ 981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
531 984
532#define expect_false(cond) ecb_expect_false (cond) 985/* count trailing zero bits and count # of one bits */
533#define expect_true(cond) ecb_expect_true (cond) 986#if ECB_GCC_VERSION(3,4) \
534#define noinline ecb_noinline 987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
535 1592
536#define inline_size ecb_inline 1593#define inline_size ecb_inline
537 1594
538#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
539# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
540#else 1597#else
541# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
542#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
543 1666
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545 1668
546#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
548#else 1671#else
549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif 1673#endif
551 1674
552#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
553#define EMPTY2(a,b) /* used to suppress some warnings */
554 1676
555typedef ev_watcher *W; 1677typedef ev_watcher *W;
556typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
557typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
558 1680
… …
583# include "ev_win32.c" 1705# include "ev_win32.c"
584#endif 1706#endif
585 1707
586/*****************************************************************************/ 1708/*****************************************************************************/
587 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
588/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
589 1715
590#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
591# include <math.h> 1717# include <math.h>
592# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
593#else 1719#else
594 1720
595#include <float.h> 1721#include <float.h>
596 1722
597/* a floor() replacement function, should be independent of ev_tstamp type */ 1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
598static ev_tstamp noinline 1725static ev_tstamp
599ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
600{ 1727{
601 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else 1731#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif 1733#endif
607 1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
608 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
609 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
610 { 1745 {
611 ev_tstamp f; 1746 ev_tstamp f;
612 1747
613 if (v == v - 1.) 1748 if (v == v - 1.)
614 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
615 1750
616 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
618 } 1753 }
619 1754
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */ 1755 /* fits into an unsigned long */
629 return (unsigned long)v; 1756 return (unsigned long)v;
630} 1757}
631 1758
632#endif 1759#endif
… …
635 1762
636#ifdef __linux 1763#ifdef __linux
637# include <sys/utsname.h> 1764# include <sys/utsname.h>
638#endif 1765#endif
639 1766
640static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
641ev_linux_version (void) 1769ev_linux_version (void)
642{ 1770{
643#ifdef __linux 1771#ifdef __linux
644 unsigned int v = 0; 1772 unsigned int v = 0;
645 struct utsname buf; 1773 struct utsname buf;
… …
674} 1802}
675 1803
676/*****************************************************************************/ 1804/*****************************************************************************/
677 1805
678#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
679static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
680ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
681{ 1810{
682 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
683} 1812}
684#endif 1813#endif
685 1814
686static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
687 1816
688void ecb_cold 1817ecb_cold
1818void
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
690{ 1820{
691 syserr_cb = cb; 1821 syserr_cb = cb;
692} 1822}
693 1823
694static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
695ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
696{ 1827{
697 if (!msg) 1828 if (!msg)
698 msg = "(libev) system error"; 1829 msg = "(libev) system error";
699 1830
… …
712 abort (); 1843 abort ();
713 } 1844 }
714} 1845}
715 1846
716static void * 1847static void *
717ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
718{ 1849{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
722 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
723 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
724 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
725 */ 1855 */
726 1856
727 if (size) 1857 if (size)
728 return realloc (ptr, size); 1858 return realloc (ptr, size);
729 1859
730 free (ptr); 1860 free (ptr);
731 return 0; 1861 return 0;
732#endif
733} 1862}
734 1863
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
736 1865
737void ecb_cold 1866ecb_cold
1867void
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
739{ 1869{
740 alloc = cb; 1870 alloc = cb;
741} 1871}
742 1872
743inline_speed void * 1873inline_speed void *
… …
770typedef struct 1900typedef struct
771{ 1901{
772 WL head; 1902 WL head;
773 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
776 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
777#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif 1909#endif
780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
781 SOCKET handle; 1911 SOCKET handle;
… …
831 #undef VAR 1961 #undef VAR
832 }; 1962 };
833 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
834 1964
835 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
836 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837 1967
838#else 1968#else
839 1969
840 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
841 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1972 #include "ev_vars.h"
843 #undef VAR 1973 #undef VAR
844 1974
845 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
846 1976
847#endif 1977#endif
848 1978
849#if EV_FEATURE_API 1979#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else 1983#else
854# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
860 1990
861/*****************************************************************************/ 1991/*****************************************************************************/
862 1992
863#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1994ev_tstamp
865ev_time (void) 1995ev_time (void) EV_NOEXCEPT
866{ 1996{
867#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
869 { 1999 {
870 struct timespec ts; 2000 struct timespec ts;
871 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
872 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
873 } 2003 }
874#endif 2004#endif
875 2005
876 struct timeval tv; 2006 struct timeval tv;
877 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
878 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
879} 2009}
880#endif 2010#endif
881 2011
882inline_size ev_tstamp 2012inline_size ev_tstamp
883get_clock (void) 2013get_clock (void)
884{ 2014{
885#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
886 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
887 { 2017 {
888 struct timespec ts; 2018 struct timespec ts;
889 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
890 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
891 } 2021 }
892#endif 2022#endif
893 2023
894 return ev_time (); 2024 return ev_time ();
895} 2025}
896 2026
897#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
898ev_tstamp 2028ev_tstamp
899ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
900{ 2030{
901 return ev_rt_now; 2031 return ev_rt_now;
902} 2032}
903#endif 2033#endif
904 2034
905void 2035void
906ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
907{ 2037{
908 if (delay > 0.) 2038 if (delay > 0.)
909 { 2039 {
910#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
911 struct timespec ts; 2041 struct timespec ts;
912 2042
913 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
915#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
916 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
917#else 2049#else
918 struct timeval tv; 2050 struct timeval tv;
919 2051
920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
921 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
939 2071
940 do 2072 do
941 ncur <<= 1; 2073 ncur <<= 1;
942 while (cnt > ncur); 2074 while (cnt > ncur);
943 2075
944 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 2078 {
947 ncur *= elem; 2079 ncur *= elem;
948 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
951 } 2083 }
952 2084
953 return ncur; 2085 return ncur;
954} 2086}
955 2087
956static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
957array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
958{ 2091{
959 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
960 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
961} 2094}
962 2095
2096#define array_needsize_noinit(base,offset,count)
2097
963#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
965 2100
966#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
968 { \ 2103 { \
969 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
973 } 2108 }
974 2109
975#if 0 2110#if 0
976#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
987 2122
988/*****************************************************************************/ 2123/*****************************************************************************/
989 2124
990/* dummy callback for pending events */ 2125/* dummy callback for pending events */
991static void noinline 2126ecb_noinline
2127static void
992pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 2129{
994} 2130}
995 2131
996void noinline 2132ecb_noinline
2133void
997ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
998{ 2135{
999 W w_ = (W)w; 2136 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1001 2138
1002 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1003 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1004 else 2141 else
1005 { 2142 {
1006 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1008 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1010 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
1011} 2150}
1012 2151
1013inline_speed void 2152inline_speed void
1014feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1015{ 2154{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1017 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1018} 2157}
1019 2158
1020inline_size void 2159inline_size void
1021feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
1056inline_speed void 2195inline_speed void
1057fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1058{ 2197{
1059 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1060 2199
1061 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1063} 2202}
1064 2203
1065void 2204void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1067{ 2206{
1068 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1070} 2209}
1071 2210
… …
1108 ev_io *w; 2247 ev_io *w;
1109 2248
1110 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1112 2251
1113 anfd->reify = 0; 2252 anfd->reify = 0;
1114 2253
1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1116 { 2255 {
1117 anfd->events = 0; 2256 anfd->events = 0;
1118 2257
1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1120 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1129 2268
1130 fdchangecnt = 0; 2269 fdchangecnt = 0;
1131} 2270}
1132 2271
1133/* something about the given fd changed */ 2272/* something about the given fd changed */
1134inline_size void 2273inline_size
2274void
1135fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1136{ 2276{
1137 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1138 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1139 2279
1140 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1141 { 2281 {
1142 ++fdchangecnt; 2282 ++fdchangecnt;
1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1144 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1145 } 2285 }
1146} 2286}
1147 2287
1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold 2289inline_speed ecb_cold void
1150fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1151{ 2291{
1152 ev_io *w; 2292 ev_io *w;
1153 2293
1154 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1158 } 2298 }
1159} 2299}
1160 2300
1161/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold 2302inline_size ecb_cold int
1163fd_valid (int fd) 2303fd_valid (int fd)
1164{ 2304{
1165#ifdef _WIN32 2305#ifdef _WIN32
1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1167#else 2307#else
1168 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1169#endif 2309#endif
1170} 2310}
1171 2311
1172/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1173static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1174fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1175{ 2316{
1176 int fd; 2317 int fd;
1177 2318
1178 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1180 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1181 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1182} 2323}
1183 2324
1184/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1185static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1186fd_enomem (EV_P) 2328fd_enomem (EV_P)
1187{ 2329{
1188 int fd; 2330 int fd;
1189 2331
1190 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1194 break; 2336 break;
1195 } 2337 }
1196} 2338}
1197 2339
1198/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1199static void noinline 2341ecb_noinline
2342static void
1200fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1201{ 2344{
1202 int fd; 2345 int fd;
1203 2346
1204 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1257 ev_tstamp minat; 2400 ev_tstamp minat;
1258 ANHE *minpos; 2401 ANHE *minpos;
1259 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1260 2403
1261 /* find minimum child */ 2404 /* find minimum child */
1262 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1263 { 2406 {
1264 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1265 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1266 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1267 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1268 } 2411 }
1269 else if (pos < E) 2412 else if (pos < E)
1270 { 2413 {
1271 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1272 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1273 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1274 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1275 } 2418 }
1276 else 2419 else
1277 break; 2420 break;
1278 2421
1279 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1287 2430
1288 heap [k] = he; 2431 heap [k] = he;
1289 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1290} 2433}
1291 2434
1292#else /* 4HEAP */ 2435#else /* not 4HEAP */
1293 2436
1294#define HEAP0 1 2437#define HEAP0 1
1295#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1296#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1297 2440
… …
1385 2528
1386/*****************************************************************************/ 2529/*****************************************************************************/
1387 2530
1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1389 2532
1390static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
1391evpipe_init (EV_P) 2535evpipe_init (EV_P)
1392{ 2536{
1393 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1394 { 2538 {
2539 int fds [2];
2540
1395# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1398 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1399 2546
1400 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1401 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1402 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1403 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1404 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1405 } 2608 }
1406 else 2609 else
1407# endif 2610#endif
1408 { 2611 {
1409 while (pipe (evpipe)) 2612#ifdef _WIN32
1410 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1411 2614 DWORD sent;
1412 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1413 fd_intern (evpipe [1]); 2616 buf.len = 1;
1414 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1415 } 2621 }
1416 2622
1417 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 }
1420}
1421
1422inline_speed void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{
1425 if (!*flag)
1426 {
1427 *flag = 1;
1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno; 2623 errno = old_errno;
1457 }
1458 } 2624 }
1459} 2625}
1460 2626
1461/* called whenever the libev signal pipe */ 2627/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */ 2628/* got some events (signal, async) */
… …
1466 int i; 2632 int i;
1467 2633
1468 if (revents & EV_READ) 2634 if (revents & EV_READ)
1469 { 2635 {
1470#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1471 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1472 { 2638 {
1473 uint64_t counter; 2639 uint64_t counter;
1474 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1475 } 2641 }
1476 else 2642 else
1477#endif 2643#endif
1478 { 2644 {
1479 char dummy; 2645 char dummy[4];
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1481 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
1482 } 2656 }
1483 } 2657 }
1484 2658
1485 pipe_write_skipped = 0; 2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1486 2662
1487#if EV_SIGNAL_ENABLE 2663#if EV_SIGNAL_ENABLE
1488 if (sig_pending) 2664 if (sig_pending)
1489 { 2665 {
1490 sig_pending = 0; 2666 sig_pending = 0;
1491 2667
2668 ECB_MEMORY_FENCE;
2669
1492 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1493 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1494 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1495 } 2673 }
1496#endif 2674#endif
1497 2675
1498#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1499 if (async_pending) 2677 if (async_pending)
1500 { 2678 {
1501 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1502 2682
1503 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1504 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1505 { 2685 {
1506 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1507 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1508 } 2689 }
1509 } 2690 }
1510#endif 2691#endif
1511} 2692}
1512 2693
1513/*****************************************************************************/ 2694/*****************************************************************************/
1514 2695
1515void 2696void
1516ev_feed_signal (int signum) 2697ev_feed_signal (int signum) EV_NOEXCEPT
1517{ 2698{
1518#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
1519 EV_P = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
1520 2703
1521 if (!EV_A) 2704 if (!EV_A)
1522 return; 2705 return;
1523#endif 2706#endif
1524 2707
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1; 2708 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending); 2709 evpipe_write (EV_A_ &sig_pending);
1530} 2710}
1531 2711
1532static void 2712static void
… …
1537#endif 2717#endif
1538 2718
1539 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
1540} 2720}
1541 2721
1542void noinline 2722ecb_noinline
2723void
1543ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1544{ 2725{
1545 WL w; 2726 WL w;
1546 2727
1547 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1548 return; 2729 return;
1549 2730
1550 --signum; 2731 --signum;
1551 2732
1552#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1553 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1554 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1555 2736
1556 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1557 return; 2738 return;
1558#endif 2739#endif
1559 2740
1560 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1561 2743
1562 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1564} 2746}
1565 2747
… …
1656# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1657#endif 2839#endif
1658#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1659# include "ev_epoll.c" 2841# include "ev_epoll.c"
1660#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1661#if EV_USE_POLL 2849#if EV_USE_POLL
1662# include "ev_poll.c" 2850# include "ev_poll.c"
1663#endif 2851#endif
1664#if EV_USE_SELECT 2852#if EV_USE_SELECT
1665# include "ev_select.c" 2853# include "ev_select.c"
1666#endif 2854#endif
1667 2855
1668int ecb_cold 2856ecb_cold int
1669ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1670{ 2858{
1671 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1672} 2860}
1673 2861
1674int ecb_cold 2862ecb_cold int
1675ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1676{ 2864{
1677 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1678} 2866}
1679 2867
1680/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1681int inline_size ecb_cold 2869inline_size ecb_cold int
1682enable_secure (void) 2870enable_secure (void)
1683{ 2871{
1684#ifdef _WIN32 2872#ifdef _WIN32
1685 return 0; 2873 return 0;
1686#else 2874#else
1687 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1688 || getgid () != getegid (); 2876 || getgid () != getegid ();
1689#endif 2877#endif
1690} 2878}
1691 2879
1692unsigned int ecb_cold 2880ecb_cold
2881unsigned int
1693ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1694{ 2883{
1695 unsigned int flags = 0; 2884 unsigned int flags = 0;
1696 2885
1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1698 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1699 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1700 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1702 2893
1703 return flags; 2894 return flags;
1704} 2895}
1705 2896
1706unsigned int ecb_cold 2897ecb_cold
2898unsigned int
1707ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1708{ 2900{
1709 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1710 2902
1711#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1712 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1720#endif 2912#endif
1721#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1723#endif 2915#endif
1724 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
1725 return flags; 2926 return flags;
1726} 2927}
1727 2928
1728unsigned int ecb_cold 2929ecb_cold
2930unsigned int
1729ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1730{ 2932{
1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1732 2934
1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1735 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
1736 2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
2945
1737 return flags; 2946 return flags;
1738} 2947}
1739 2948
1740unsigned int 2949unsigned int
1741ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1742{ 2951{
1743 return backend; 2952 return backend;
1744} 2953}
1745 2954
1746#if EV_FEATURE_API 2955#if EV_FEATURE_API
1747unsigned int 2956unsigned int
1748ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1749{ 2958{
1750 return loop_count; 2959 return loop_count;
1751} 2960}
1752 2961
1753unsigned int 2962unsigned int
1754ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1755{ 2964{
1756 return loop_depth; 2965 return loop_depth;
1757} 2966}
1758 2967
1759void 2968void
1760ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1761{ 2970{
1762 io_blocktime = interval; 2971 io_blocktime = interval;
1763} 2972}
1764 2973
1765void 2974void
1766ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1767{ 2976{
1768 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1769} 2978}
1770 2979
1771void 2980void
1772ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1773{ 2982{
1774 userdata = data; 2983 userdata = data;
1775} 2984}
1776 2985
1777void * 2986void *
1778ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1779{ 2988{
1780 return userdata; 2989 return userdata;
1781} 2990}
1782 2991
1783void 2992void
1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1785{ 2994{
1786 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1787} 2996}
1788 2997
1789void 2998void
1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1791{ 3000{
1792 release_cb = release; 3001 release_cb = release;
1793 acquire_cb = acquire; 3002 acquire_cb = acquire;
1794} 3003}
1795#endif 3004#endif
1796 3005
1797/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1798static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
1799loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1800{ 3010{
1801 if (!backend) 3011 if (!backend)
1802 { 3012 {
1803 origflags = flags; 3013 origflags = flags;
1804 3014
… …
1849#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1850 async_pending = 0; 3060 async_pending = 0;
1851#endif 3061#endif
1852 pipe_write_skipped = 0; 3062 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0; 3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1854#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1856#endif 3068#endif
1857#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1860 3072
1861 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
1862 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1863 3075
1864#if EV_USE_IOCP 3076#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif 3078#endif
1867#if EV_USE_PORT 3079#if EV_USE_PORT
1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1869#endif 3081#endif
1870#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1872#endif 3090#endif
1873#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1874 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1875#endif 3093#endif
1876#if EV_USE_POLL 3094#if EV_USE_POLL
1877 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1878#endif 3096#endif
1879#if EV_USE_SELECT 3097#if EV_USE_SELECT
1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1881#endif 3099#endif
1882 3100
1883 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1884 3102
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1888#endif 3106#endif
1889 } 3107 }
1890} 3108}
1891 3109
1892/* free up a loop structure */ 3110/* free up a loop structure */
1893void ecb_cold 3111ecb_cold
3112void
1894ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1895{ 3114{
1896 int i; 3115 int i;
1897 3116
1898#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
… …
1901 return; 3120 return;
1902#endif 3121#endif
1903 3122
1904#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
1907 { 3126 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
1910 } 3129 }
1911#endif 3130#endif
1912 3131
1913#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1915 { 3134 {
1916 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
1918 } 3137 }
1919#endif 3138#endif
… …
1921 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1922 { 3141 {
1923 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1924 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1925 3144
1926#if EV_USE_EVENTFD
1927 if (evfd >= 0)
1928 close (evfd);
1929#endif
1930
1931 if (evpipe [0] >= 0)
1932 {
1933 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1934 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1935 }
1936 } 3147 }
1937 3148
1938#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1939 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1940 close (sigfd); 3151 close (sigfd);
… …
1947 3158
1948 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1949 close (backend_fd); 3160 close (backend_fd);
1950 3161
1951#if EV_USE_IOCP 3162#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif 3164#endif
1954#if EV_USE_PORT 3165#if EV_USE_PORT
1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1956#endif 3167#endif
1957#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1959#endif 3176#endif
1960#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1961 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1962#endif 3179#endif
1963#if EV_USE_POLL 3180#if EV_USE_POLL
1964 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1965#endif 3182#endif
1966#if EV_USE_SELECT 3183#if EV_USE_SELECT
1967 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1968#endif 3185#endif
1969 3186
1970 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1971 { 3188 {
1972 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
2014 3231
2015inline_size void 3232inline_size void
2016loop_fork (EV_P) 3233loop_fork (EV_P)
2017{ 3234{
2018#if EV_USE_PORT 3235#if EV_USE_PORT
2019 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2020#endif 3237#endif
2021#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2022 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2023#endif 3246#endif
2024#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2025 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2026#endif 3249#endif
2027#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2028 infy_fork (EV_A); 3251 infy_fork (EV_A);
2029#endif 3252#endif
2030 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2031 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2032 { 3256 {
2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2034 3258
2035 ev_ref (EV_A); 3259 ev_ref (EV_A);
2036 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2037 3261
2038#if EV_USE_EVENTFD
2039 if (evfd >= 0)
2040 close (evfd);
2041#endif
2042
2043 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
2044 {
2045 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
2046 EV_WIN32_CLOSE_FD (evpipe [1]);
2047 }
2048 3264
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2050 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
2051 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
2052 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2053#endif
2054 } 3268 }
3269#endif
2055 3270
2056 postfork = 0; 3271 postfork = 0;
2057} 3272}
2058 3273
2059#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2060 3275
3276ecb_cold
2061struct ev_loop * ecb_cold 3277struct ev_loop *
2062ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2063{ 3279{
2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2065 3281
2066 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2067 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
2074} 3290}
2075 3291
2076#endif /* multiplicity */ 3292#endif /* multiplicity */
2077 3293
2078#if EV_VERIFY 3294#if EV_VERIFY
2079static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2080verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2081{ 3298{
2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2083 3300
2084 if (w->pending) 3301 if (w->pending)
2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2086} 3303}
2087 3304
2088static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2089verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2090{ 3308{
2091 int i; 3309 int i;
2092 3310
2093 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2098 3316
2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2100 } 3318 }
2101} 3319}
2102 3320
2103static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2104array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2105{ 3324{
2106 while (cnt--) 3325 while (cnt--)
2107 { 3326 {
2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2111} 3330}
2112#endif 3331#endif
2113 3332
2114#if EV_FEATURE_API 3333#if EV_FEATURE_API
2115void ecb_cold 3334void ecb_cold
2116ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
2117{ 3336{
2118#if EV_VERIFY 3337#if EV_VERIFY
2119 int i; 3338 int i;
2120 WL w; 3339 WL w, w2;
2121 3340
2122 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
2123 3342
2124 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
2125 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
2126 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2127 3346
2128 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
2129 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
2130 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
2131 { 3353 {
2132 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
2133 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2134 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2135 } 3364 }
3365 }
2136 3366
2137 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
2138 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
2139 3369
2140#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2186#endif 3416#endif
2187} 3417}
2188#endif 3418#endif
2189 3419
2190#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2191struct ev_loop * ecb_cold 3422struct ev_loop *
2192#else 3423#else
2193int 3424int
2194#endif 3425#endif
2195ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2196{ 3427{
2197 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2198 { 3429 {
2199#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2200 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2219 3450
2220 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2221} 3452}
2222 3453
2223void 3454void
2224ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2225{ 3456{
2226 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2227} 3458}
2228 3459
2229/*****************************************************************************/ 3460/*****************************************************************************/
2230 3461
2231void 3462void
… …
2233{ 3464{
2234 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2235} 3466}
2236 3467
2237unsigned int 3468unsigned int
2238ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2239{ 3470{
2240 int pri; 3471 int pri;
2241 unsigned int count = 0; 3472 unsigned int count = 0;
2242 3473
2243 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2244 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2245 3476
2246 return count; 3477 return count;
2247} 3478}
2248 3479
2249void noinline 3480ecb_noinline
3481void
2250ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2251{ 3483{
2252 int pri; 3484 pendingpri = NUMPRI;
2253 3485
2254 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2255 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2256 { 3492 {
2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2258 3494
2259 p->w->pending = 0; 3495 p->w->pending = 0;
2260 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2261 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2262 } 3498 }
3499 }
3500 while (pendingpri);
2263} 3501}
2264 3502
2265#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2266/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2267/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2268inline_size void 3506inline_size void
2269idle_reify (EV_P) 3507idle_reify (EV_P)
2270{ 3508{
2271 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2272 { 3510 {
2273 int pri; 3511 int pri;
2274 3512
2275 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2276 { 3514 {
… …
2325 } 3563 }
2326} 3564}
2327 3565
2328#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
2329 3567
2330static void noinline 3568ecb_noinline
3569static void
2331periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
2332{ 3571{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335 3574
… …
2337 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
2338 { 3577 {
2339 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
2340 3579
2341 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
2343 { 3582 {
2344 at = ev_rt_now; 3583 at = ev_rt_now;
2345 break; 3584 break;
2346 } 3585 }
2347 3586
… …
2357{ 3596{
2358 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2359 3598
2360 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2361 { 3600 {
2362 int feed_count = 0;
2363
2364 do 3601 do
2365 { 3602 {
2366 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2367 3604
2368 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2395 } 3632 }
2396} 3633}
2397 3634
2398/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2399/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2400static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
2401periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2402{ 3640{
2403 int i; 3641 int i;
2404 3642
2405 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2418 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2419} 3657}
2420#endif 3658#endif
2421 3659
2422/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2423static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
2424timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2425{ 3664{
2426 int i; 3665 int i;
2427 3666
2428 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2437/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2438inline_speed void 3677inline_speed void
2439time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2440{ 3679{
2441#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2442 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2443 { 3682 {
2444 int i; 3683 int i;
2445 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2446 3685
2447 mn_now = get_clock (); 3686 mn_now = get_clock ();
2448 3687
2449 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2450 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2451 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2452 { 3691 {
2453 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2454 return; 3693 return;
2455 } 3694 }
2456 3695
… …
2470 ev_tstamp diff; 3709 ev_tstamp diff;
2471 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2472 3711
2473 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
2474 3713
2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2476 return; /* all is well */ 3715 return; /* all is well */
2477 3716
2478 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2479 mn_now = get_clock (); 3718 mn_now = get_clock ();
2480 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2489 else 3728 else
2490#endif 3729#endif
2491 { 3730 {
2492 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2493 3732
2494 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2495 { 3734 {
2496 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2497 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2498#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2499 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2502 3741
2503 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2504 } 3743 }
2505} 3744}
2506 3745
2507void 3746int
2508ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2509{ 3748{
2510#if EV_FEATURE_API 3749#if EV_FEATURE_API
2511 ++loop_depth; 3750 ++loop_depth;
2512#endif 3751#endif
… …
2522#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2523 ev_verify (EV_A); 3762 ev_verify (EV_A);
2524#endif 3763#endif
2525 3764
2526#ifndef _WIN32 3765#ifndef _WIN32
2527 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2528 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2529 { 3768 {
2530 curpid = getpid (); 3769 curpid = getpid ();
2531 postfork = 1; 3770 postfork = 1;
2532 } 3771 }
2533#endif 3772#endif
2534 3773
2535#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2536 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2537 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2538 if (forkcnt) 3777 if (forkcnt)
2539 { 3778 {
2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2541 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2542 } 3781 }
2543#endif 3782#endif
2544 3783
2545#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2546 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2547 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2548 { 3787 {
2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2550 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2551 } 3790 }
2552#endif 3791#endif
2553 3792
2554 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2555 break; 3794 break;
2556 3795
2557 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2558 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2559 loop_fork (EV_A); 3798 loop_fork (EV_A);
2560 3799
2561 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2562 fd_reify (EV_A); 3801 fd_reify (EV_A);
2563 3802
… …
2573 time_update (EV_A_ 1e100); 3812 time_update (EV_A_ 1e100);
2574 3813
2575 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
2577 3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2579 { 3820 {
2580 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2581 3822
2582 if (timercnt) 3823 if (timercnt)
2583 { 3824 {
… …
2592 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2593 } 3834 }
2594#endif 3835#endif
2595 3836
2596 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2597 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2598 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2599 3840
2600 /* at this point, we NEED to wait, so we have to ensure */ 3841 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime; 3844 waittime = backend_mintime;
2604 3845
2605 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2606 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2607 { 3848 {
2608 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2609 3850
2610 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
2611 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
2612 3853
2613 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2614 { 3855 {
2615 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2616 waittime -= sleeptime; 3857 waittime -= sleeptime;
2617 } 3858 }
2618 } 3859 }
… …
2623#endif 3864#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2625 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627 3868
2628 pipe_write_wanted = 0; 3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2629 3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
2630 if (pipe_write_skipped) 3872 if (pipe_write_skipped)
2631 { 3873 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 } 3876 }
2635 3877
2636
2637 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2638 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2639 } 3880 }
2640 3881
2641 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
2649 idle_reify (EV_A); 3890 idle_reify (EV_A);
2650#endif 3891#endif
2651 3892
2652#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
2653 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2654 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif 3897#endif
2657 3898
2658 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2659 } 3900 }
2660 while (expect_true ( 3901 while (ecb_expect_true (
2661 activecnt 3902 activecnt
2662 && !loop_done 3903 && !loop_done
2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2664 )); 3905 ));
2665 3906
… …
2667 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2668 3909
2669#if EV_FEATURE_API 3910#if EV_FEATURE_API
2670 --loop_depth; 3911 --loop_depth;
2671#endif 3912#endif
2672}
2673 3913
3914 return activecnt;
3915}
3916
2674void 3917void
2675ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2676{ 3919{
2677 loop_done = how; 3920 loop_done = how;
2678} 3921}
2679 3922
2680void 3923void
2681ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2682{ 3925{
2683 ++activecnt; 3926 ++activecnt;
2684} 3927}
2685 3928
2686void 3929void
2687ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2688{ 3931{
2689 --activecnt; 3932 --activecnt;
2690} 3933}
2691 3934
2692void 3935void
2693ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2694{ 3937{
2695 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2696} 3939}
2697 3940
2698void 3941void
2699ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2700{ 3943{
2701 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2702} 3945}
2703 3946
2704void 3947void
2705ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2706{ 3949{
2707 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2708 3951
2709 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2710 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2727inline_size void 3970inline_size void
2728wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2729{ 3972{
2730 while (*head) 3973 while (*head)
2731 { 3974 {
2732 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2733 { 3976 {
2734 *head = elem->next; 3977 *head = elem->next;
2735 break; 3978 break;
2736 } 3979 }
2737 3980
… …
2749 w->pending = 0; 3992 w->pending = 0;
2750 } 3993 }
2751} 3994}
2752 3995
2753int 3996int
2754ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2755{ 3998{
2756 W w_ = (W)w; 3999 W w_ = (W)w;
2757 int pending = w_->pending; 4000 int pending = w_->pending;
2758 4001
2759 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2760 { 4003 {
2761 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2762 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2763 w_->pending = 0; 4006 w_->pending = 0;
2764 return p->events; 4007 return p->events;
… …
2791 w->active = 0; 4034 w->active = 0;
2792} 4035}
2793 4036
2794/*****************************************************************************/ 4037/*****************************************************************************/
2795 4038
2796void noinline 4039ecb_noinline
4040void
2797ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2798{ 4042{
2799 int fd = w->fd; 4043 int fd = w->fd;
2800 4044
2801 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2802 return; 4046 return;
2803 4047
2804 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2806 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2807 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2808 4055
2809 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2811 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2812 4062
2813 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2814 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2815 4065
2816 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2817} 4067}
2818 4068
2819void noinline 4069ecb_noinline
4070void
2820ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2821{ 4072{
2822 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2823 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2824 return; 4075 return;
2825 4076
2826 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2827 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2828 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2829 4083
2830 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2831 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2832 4086
2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2834 4088
2835 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2836} 4090}
2837 4091
2838void noinline 4092ecb_noinline
4093void
2839ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2840{ 4095{
2841 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2842 return; 4097 return;
2843 4098
2844 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2845 4100
2846 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2847 4102
2848 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2849 4104
2850 ++timercnt; 4105 ++timercnt;
2851 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2852 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2853 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2854 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2855 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2856 4111
2857 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2858 4113
2859 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2860} 4115}
2861 4116
2862void noinline 4117ecb_noinline
4118void
2863ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2864{ 4120{
2865 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2866 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2867 return; 4123 return;
2868 4124
2869 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2870 4126
2871 { 4127 {
… …
2873 4129
2874 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2875 4131
2876 --timercnt; 4132 --timercnt;
2877 4133
2878 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2879 { 4135 {
2880 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2881 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2882 } 4138 }
2883 } 4139 }
… …
2887 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2888 4144
2889 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2890} 4146}
2891 4147
2892void noinline 4148ecb_noinline
4149void
2893ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2894{ 4151{
2895 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2896 4155
2897 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2898 { 4157 {
2899 if (w->repeat) 4158 if (w->repeat)
2900 { 4159 {
… …
2913 4172
2914 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2915} 4174}
2916 4175
2917ev_tstamp 4176ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2919{ 4178{
2920 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2921} 4180}
2922 4181
2923#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2924void noinline 4183ecb_noinline
4184void
2925ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2926{ 4186{
2927 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2928 return; 4188 return;
2929 4189
2930 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2932 else if (w->interval) 4192 else if (w->interval)
… …
2939 4199
2940 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2941 4201
2942 ++periodiccnt; 4202 ++periodiccnt;
2943 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2944 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2945 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2946 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2947 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2948 4208
2949 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2950 4210
2951 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2952} 4212}
2953 4213
2954void noinline 4214ecb_noinline
4215void
2955ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2956{ 4217{
2957 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2958 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2959 return; 4220 return;
2960 4221
2961 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2962 4223
2963 { 4224 {
… …
2965 4226
2966 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2967 4228
2968 --periodiccnt; 4229 --periodiccnt;
2969 4230
2970 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2971 { 4232 {
2972 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2973 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2974 } 4235 }
2975 } 4236 }
… …
2977 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2978 4239
2979 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2980} 4241}
2981 4242
2982void noinline 4243ecb_noinline
4244void
2983ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2984{ 4246{
2985 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2986 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2987 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2988} 4250}
… …
2992# define SA_RESTART 0 4254# define SA_RESTART 0
2993#endif 4255#endif
2994 4256
2995#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
2996 4258
2997void noinline 4259ecb_noinline
4260void
2998ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2999{ 4262{
3000 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3001 return; 4264 return;
3002 4265
3003 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3004 4267
3005#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3006 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
3007 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3008 4271
3009 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
3010#endif 4274#endif
3011 4275
3012 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
3013 4277
3014#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
3073 } 4337 }
3074 4338
3075 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3076} 4340}
3077 4341
3078void noinline 4342ecb_noinline
4343void
3079ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3080{ 4345{
3081 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3082 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3083 return; 4348 return;
3084 4349
3085 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3086 4351
3087 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3115#endif 4380#endif
3116 4381
3117#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3118 4383
3119void 4384void
3120ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3121{ 4386{
3122#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3123 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3124#endif 4389#endif
3125 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3126 return; 4391 return;
3127 4392
3128 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3129 4394
3130 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
3132 4397
3133 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3134} 4399}
3135 4400
3136void 4401void
3137ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3138{ 4403{
3139 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3140 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3141 return; 4406 return;
3142 4407
3143 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3144 4409
3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3159 4424
3160#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3161#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3162#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
3163 4428
3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3165 4430
3166#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
3167 4432
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3170 4435
3171static void noinline 4436ecb_noinline
4437static void
3172infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
3173{ 4439{
3174 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
3175 4444
3176 if (w->wd >= 0) 4445 if (w->wd >= 0)
3177 { 4446 {
3178 struct statfs sfs; 4447 struct statfs sfs;
3179 4448
… …
3183 4452
3184 if (!fs_2625) 4453 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
3189 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3192 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else 4469 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3196 } 4471 }
… …
3231 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3232 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3233 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3234} 4509}
3235 4510
3236static void noinline 4511ecb_noinline
4512static void
3237infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3238{ 4514{
3239 int slot; 4515 int slot;
3240 int wd = w->wd; 4516 int wd = w->wd;
3241 4517
… …
3248 4524
3249 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3250 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3251} 4527}
3252 4528
3253static void noinline 4529ecb_noinline
4530static void
3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3255{ 4532{
3256 if (slot < 0) 4533 if (slot < 0)
3257 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3294 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3296 } 4573 }
3297} 4574}
3298 4575
3299inline_size void ecb_cold 4576inline_size ecb_cold
4577void
3300ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3301{ 4579{
3302 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3304 */ 4582 */
… …
3309} 4587}
3310 4588
3311inline_size int 4589inline_size int
3312infy_newfd (void) 4590infy_newfd (void)
3313{ 4591{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0) 4594 if (fd >= 0)
3317 return fd; 4595 return fd;
3318#endif 4596#endif
3319 return inotify_init (); 4597 return inotify_init ();
… …
3394#else 4672#else
3395# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3396#endif 4674#endif
3397 4675
3398void 4676void
3399ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3400{ 4678{
3401 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3402 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3403 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3404 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3405} 4683}
3406 4684
3407static void noinline 4685ecb_noinline
4686static void
3408stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3409{ 4688{
3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3411 4690
3412 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3443 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3444 } 4723 }
3445} 4724}
3446 4725
3447void 4726void
3448ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3449{ 4728{
3450 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3451 return; 4730 return;
3452 4731
3453 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3454 4733
3455 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3474 4753
3475 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3476} 4755}
3477 4756
3478void 4757void
3479ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3480{ 4759{
3481 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3482 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3483 return; 4762 return;
3484 4763
3485 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3486 4765
3487#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3500} 4779}
3501#endif 4780#endif
3502 4781
3503#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3504void 4783void
3505ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3506{ 4785{
3507 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3508 return; 4787 return;
3509 4788
3510 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3511 4790
3512 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3515 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3516 4795
3517 ++idleall; 4796 ++idleall;
3518 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3519 4798
3520 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3521 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3522 } 4801 }
3523 4802
3524 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3525} 4804}
3526 4805
3527void 4806void
3528ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3529{ 4808{
3530 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3531 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3532 return; 4811 return;
3533 4812
3534 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3535 4814
3536 { 4815 {
… …
3547} 4826}
3548#endif 4827#endif
3549 4828
3550#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3551void 4830void
3552ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3553{ 4832{
3554 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3555 return; 4834 return;
3556 4835
3557 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3558 4837
3559 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3560 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3561 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3562 4841
3563 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3564} 4843}
3565 4844
3566void 4845void
3567ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3568{ 4847{
3569 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3571 return; 4850 return;
3572 4851
3573 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3574 4853
3575 { 4854 {
… …
3585} 4864}
3586#endif 4865#endif
3587 4866
3588#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3589void 4868void
3590ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3591{ 4870{
3592 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3593 return; 4872 return;
3594 4873
3595 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3596 4875
3597 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3598 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3599 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3600 4879
3601 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3602} 4881}
3603 4882
3604void 4883void
3605ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3606{ 4885{
3607 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3608 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3609 return; 4888 return;
3610 4889
3611 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3612 4891
3613 { 4892 {
… …
3622 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3623} 4902}
3624#endif 4903#endif
3625 4904
3626#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3627void noinline 4906ecb_noinline
4907void
3628ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3629{ 4909{
3630 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
3631} 4911}
3632 4912
3633static void 4913static void
… …
3681 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3682} 4962}
3683#endif 4963#endif
3684 4964
3685void 4965void
3686ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3687{ 4967{
3688 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3689 return; 4969 return;
3690 4970
3691 { 4971 {
3692 EV_P = w->other; 4972 EV_P = w->other;
3693 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3712 4992
3713 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3714} 4994}
3715 4995
3716void 4996void
3717ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3718{ 4998{
3719 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3720 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3721 return; 5001 return;
3722 5002
3723 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3724 5004
3725 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3732} 5012}
3733#endif 5013#endif
3734 5014
3735#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3736void 5016void
3737ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3738{ 5018{
3739 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3740 return; 5020 return;
3741 5021
3742 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3743 5023
3744 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3745 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3746 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3747 5027
3748 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3749} 5029}
3750 5030
3751void 5031void
3752ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3753{ 5033{
3754 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3755 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3756 return; 5036 return;
3757 5037
3758 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3759 5039
3760 { 5040 {
… …
3770} 5050}
3771#endif 5051#endif
3772 5052
3773#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
3774void 5054void
3775ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3776{ 5056{
3777 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
3778 return; 5058 return;
3779 5059
3780 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3781 5061
3782 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3784 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
3785 5065
3786 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A); 5067 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
3789} 5069}
3790 5070
3791void 5071void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3793{ 5073{
3794 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
3796 return; 5076 return;
3797 5077
3798 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A); 5079 ev_ref (EV_A);
3800 5080
… …
3811} 5091}
3812#endif 5092#endif
3813 5093
3814#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3815void 5095void
3816ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3817{ 5097{
3818 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3819 return; 5099 return;
3820 5100
3821 w->sent = 0; 5101 w->sent = 0;
3822 5102
3823 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3824 5104
3825 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3826 5106
3827 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3828 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3829 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3830 5110
3831 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3832} 5112}
3833 5113
3834void 5114void
3835ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3836{ 5116{
3837 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3838 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3839 return; 5119 return;
3840 5120
3841 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3842 5122
3843 { 5123 {
… …
3851 5131
3852 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3853} 5133}
3854 5134
3855void 5135void
3856ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3857{ 5137{
3858 w->sent = 1; 5138 w->sent = 1;
3859 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3860} 5140}
3861#endif 5141#endif
… …
3898 5178
3899 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3900} 5180}
3901 5181
3902void 5182void
3903ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3904{ 5184{
3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3906
3907 if (expect_false (!once))
3908 {
3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3910 return;
3911 }
3912 5186
3913 once->cb = cb; 5187 once->cb = cb;
3914 once->arg = arg; 5188 once->arg = arg;
3915 5189
3916 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3929} 5203}
3930 5204
3931/*****************************************************************************/ 5205/*****************************************************************************/
3932 5206
3933#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
3934void ecb_cold 5208ecb_cold
5209void
3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3936{ 5211{
3937 int i, j; 5212 int i, j;
3938 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3939 5214
3940 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3983 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3984#endif 5259#endif
3985 5260
3986#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3987 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3988 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3989 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3990 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3991#endif 5266#endif
3992 5267
3993#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
4046 5321
4047#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
4048 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
4049#endif 5324#endif
4050 5325
4051EV_CPP(})
4052

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